Patent US518569A successfully refreshed from Google Patents.
Patent US5021322A successfully refreshed from Google Patents.
US5021322A
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Photographic element comprising a development inhibitor releasing compound having a linking group between the carrier and the inhibitor
Assignee: Eastman Kodak Co
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Filing: 1990-02-22
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Granted: 1991-06-04
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Expires: 2010-02-22
Abstract
Abstract Photographic compound (A) capable of releasing a development inhibitor group by means of a displacement reaction enables increased image acutance when the compound contains in a coupling position a coupling-off group represented by the formula: ##STR1## wherein X, R 1 , R 2 , R 3 , R 4 , and Q are as defined in the application. Such a compound (A) is useful in a photographic silver halide material and process.
Inventors
- 👤 William J. Begley
- 👤 Teh-Hsuan Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:47
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30576; Y; Y10; Y10S; Y10S430/00; Y10S430/156; Y10S430/158
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
A photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one development inhibitor releasing compound (A) represented by the formula CAR--LINK--Q where CAR is a carrier moiety capable of releasing LINK--Q during photographic processing upon reaction with oxidized developing agent; LINK--Q is in turn capable of releasing a development inhibitor group (Q) by a displacement reaction; and LINK--Q is represented by the formula: ##STR28## wherein X represents the atoms necessary to complete an unsubstituted or substituted arylene or heterocyclic group; R 1 and R 2 individually are hydrogen or unsubstituted or substituted alkyl, aryl, or together complete a 5-, 6- or 7-member ring; R 7 and R 8 individually are hydrogen, alkyl or aryl or together complete a ring; R 4 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, heterocyclic, or aryl; and Q is a releasable development inhibitor group.
Claim 2
Dependent Claim
147 words
A photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one development inhibitor releasing compound (A) represented by the formula CAR--LINK--Q where CAR is a carrier moiety capable of releasing LINK--Q during photographic processing upon reaction with oxidized developing agent; LINK--Q is in turn capable of releasing a development inhibitor group (Q) by a displacement reaction; and LINK--Q is represented by the formula: ##STR28## wherein X represents the atoms necessary to complete an unsubstituted or substituted arylene or heterocyclic group; R 1 and R 2 individually are hydrogen or unsubstituted or substituted alkyl, aryl, or together complete a 5-, 6- or 7-member ring; R 7 and R 8 individually are hydrogen, alkyl or aryl or together complete a ring; R 4 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, heterocyclic, or aryl; and Q is a releasable development inhibitor group.
Claim 3
Dependent Claim
15 words
A photographic element as in claim 1 wherein the compound (A) is a dye-forming coupler.
Claim 4
Dependent Claim
93 words
A photographic element as in claim 1 wherein the LINK--Q is represented by the formula: ##STR29## wherein R 6 is hydrogen, nitro (--NO 2 ), a substituted or unsubstituted sulfonamido group, a substituted or unsubstituted sulfamyl group, a substituted or unsubstituted carbonamido group or a substituted or unsubstituted carbamyl group; R 7 and R 8 individually are hydrogen, unsubstituted or substituted alkyl or unsubstituted or substituted aryl or together complete a ring; R 9 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, heterocyclic or aryl; and Q 1 is a releasable development inhibitor group.
Claim 5
Dependent Claim
12 words
A photographic element as in claim 1 wherein the LINK--Q is ##STR30##
Claim 6
Dependent Claim
96 words
A photographic element as in claim 1 wherein compound (A) is represented by the formula: ##STR31## wherein COUP is a coupler moiety; X represents the atoms necessary to complete an unsubstituted or substituted arylene or heterocyclic group; R 1 and R 2 individually are hydrogen or unsubstituted or substituted alkyl, aryl, or together complete a 5-, 6- or 7-member ring; R 7 and R 8 individually are hydrogen, alkyl or aryl or together complete a ring; R 4 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, heterocyclic or aryl; and, Q is a releasable development inhibitor group.
Claim 7
Dependent Claim
13 words
A photographic element as in claim 1 wherein the compound (A) is ##STR32##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |